#304F9F#304F9F

#304F9F is a dark, vivid blue. Relative luminance 0.087; OKLCH L 44.9% C 0.135 H 265.4°. Best body text is #FFFFFF at 7.65:1 contrast (WCAG AA passes).

Color values

HEX	#304F9F
RGB	rgb(48, 79, 159)
HSL	hsl(223, 54%, 41%)
HSV	hsv(223, 70%, 62%)
CMYK	cmyk(69.8%, 50.3%, 0%, 37.6%)
CIE-LAB	lab(35.44, 16.41, -46.90)
CIE-LCH	lch(35.44, 49.69, 289.28°)
OKLab	oklab(44.93% -0.0109 -0.1346)
OKLCH	oklch(44.93% 0.135 265.4)
XYZ	xyz(10.2707, 8.7225, 33.9365)
Luminance	0.0872 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#304F9F #9F8030

analogous

#30869F #304F9F #48309F

triadic

#304F9F #9F304F #4F9F30

tetradic

#304F9F #9F3086 #9F8030 #309F48

square

#304F9F #9F3086 #9F8030 #309F48

split-complementary

#304F9F #9F4830 #869F30

monochromatic

#142041 #223870 #304F9F #4569C7 #748FD5

Accessibility & contrast

On white

7.65

#304F9F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.74

#304F9F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #304F9F

7.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##304F9F	#FFFFFF	#000000	##FFFFFF
##304F9F	1.00	7.65	2.74	7.65
#FFFFFF	7.65	1.00	21.00	1.00
#000000	2.74	21.00	1.00	21.00
##FFFFFF	7.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2259A2

Deuteranopia (green-blind)

#004F9D

Tritanopia (blue-blind)

#00626F

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #304f9f;
/* rgb */ color: rgb(48, 79, 159);
/* oklch */ color: oklch(44.9% 0.135 265.4);

Tailwind

colors: {
  custom: {
    50: '#767fbc',
    500: '#304f9f',
    950: '#000000',
  },
}

SCSS

$custom: #304f9f;
$custom-light: #767fbc;
$custom-dark: #000000;

JSON

{
  "hex": "#304f9f",
  "rgb": {
    "r": 48,
    "g": 79,
    "b": 159
  },
  "hsl": {
    "h": 223.243,
    "s": 53.623,
    "l": 40.588
  },
  "oklch": {
    "l": 0.44929,
    "c": 0.13502,
    "h": 265.4
  },
  "luminance": 0.08724
}

Semantic roles & 50–950 ramp

primary

#304F9F

secondary

#BDA76E

accent

#B44BDD

background

#F7F7FB

surface

#EEEEF6

border

#C9C9D0

text

#090A12

muted

#7B7C81

Preview Lab

Preview with #304F9F

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →